Single-air-cylinder switchover type air intake valve

Abstract

The invention discloses a single-air-cylinder switchover type air intake valve which is simple in structure, good in air impermeability, low in cost and capable of achieving a quick, flexible and reliable air channel switchover function through a single peripheral air cylinder. The single-air-cylinder switchover type air intake valve comprises a valve body provided with an inner cavity, a valve sleeve, a valve rod and a valve plate, wherein the valve sleeve, the valve rod and the valve plate are arranged in the inner cavity of the valve body. The valve body comprises an air inlet and two air outlets, wherein the air inlet and the air outlets are communicated with the inner cavity. The valve sleeve is tightly matched with the inner wall of the valve body, a plurality of through holes for enabling the inner cavity of the valve body and one air outlet to be communicated are formed in the valve sleeve, the valve plate is connected to the head portion of the valve rod, and the rail portion of the valve rod is connected with the peripheral air cylinder. When the peripheral air cylinder is pushed into or pulled back, the valve plate blocks an air channel between the air inlet and one air outlet and enables the air inlet and the other air outlet to be communicated. The single-air-cylinder switchover type air intake valve can be applied to the field of air compression.

Description

technical field [0001] The invention relates to a single-cylinder switching intake valve applicable to the field of compressed gas control systems. Background technique [0002] The double-cylinder valve in the prior art is actually two two-position two-way valves connected in parallel. Its advantages are: 1. Since this type of intake valve is forced to switch by the cylinder, its gas circuit switching is reliable; 2. It belongs to the structure of flat seat valve, so the sealing performance is better than that of spherical shuttle valve. However, the double-cylinder valve in the prior art also has certain defects, mainly including: 1. Two cylinders are used, the cost is high, the power consumption is large and too heavy; 2. The switching speed of the gas circuit is relatively slow, The phenomenon of gas path collusion in an instant is more serious, and the longer the switching stroke, the more serious this phenomenon will be. Contents of the invention [0003] The techn...

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Problems solved by technology

However, the double-cylinder valve in the prior art also has certain defects, mainly including: 1. Two cylinders are used, the cost is high, the power consumption is large and too heavy; 2. The switching speed of the gas circuit is relatively slow, The phenomenon of gas path collusion at the moment of gas path is more serious, and the longer the switching stroke is, the more serious this phenomenon is.

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